Device for electrically operating bulkhead-doors.



No. 652,302. v Patented June 26, I900.

A. H. moms & F. B. RICHMOND.

DEVICE FOR ELEOT'HICALLY OPERATING BULKHEAD DOORS.

(Application filed. m 10, 1899. Renewed Dec. 18, 1:599. (No Model.)

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UNITED STATES PATENT OFFICE.

ALBERT H. THOMAS, OF PHILADELPHIA, PENNSYLVANIA, AND FRANKLIN B. RICHMOND, .OF CAMDEN, NEW JERSEY.

DEVICE FOR ELECTRIGALLY OPERATING BULKHEAD-DOORS.

SPECIFICATION forming part of Letters Patent No. 652,302, dated June 26, 1900. Application filed lliay 10,1899. Renewed December 18, 1899. Serial No. 740,823. (No model.)

To all whom it may concern: 5 G on the solenoids, 8 a wire connecting wire Be it known that we, ALBERT I-l. THOMAS, 7 and the main or positive feed-wire a, and a resident of the city and county of Philadel- 9 a common negative wire connected with the phia, in the State of Pennsylvania,and FRANK- main negative wire Z). 55 5 LIN B. RICHMOND, a resident of the city and d are push-buttons located at any desired county of Camden, in the Stateof New Jerpoint on the wires 6 9. sey, citizens of the United States, have in- In thedrawings the wiresSand 9 are shown vented certain new and useful Improvements connected to the main supply-Wires a b. It in Devices for Electrically Operating Bulkwill be understood, however, that these wires 60 IO head-Doors, &c., of which the following is a 8 and 9 may receive current from any suitspecification. able source.

Our invention relates to improvements in Supposing the door to be closed and that it electrically operated devices particularly is desired to open it, the button 61 is pressed,

adapted for the operation of doors in Watercompleting the circuit in wires 5 and 9 and 65 I 5 tight.- bulkheads of vessels; and the object of energizing solenoid 3, the core of which is our invention is to furnish an improvement lowered, drawing down knife-blades 11 12 13, in this class of devices which'can be operated which make contact with the points 14, 15, in case of need from any desired point or and 16. 17 18 19 are points at which the points upon the vessel. knife-blades are pivoted, 20 a wire connect- 7o 20 In the accompanying drawings, forming ing point 19 with positive feed-wire a, and 22 part of this specification, and in which similar a common negative Wire connected with main letters and figures of reference indicate siminegative Wire 1). The wires a Z) have been lar parts throughoutthe several views, Figure and will be described as positive and 1 is a diagrammatic plan of a bulkhead-door negative. It will be understood, however, 75 furnished with our improved electrically conthat they may be reversed-that is, the wire trolled and operated device for opening and b may be positive and the wire a negative. closing it; Fig. 2, a side elevation of the so- The solenoid 3 having been operated as delenoid-switch for directing and reversing the scribed current will pass from Wire a through current which operates the motor; Fig. 3, a wire 20 to pivot 19, along blade 13 to con- 80 side elevation of the motor-armature, part of tact-point 16, thence along wire 23 to wire the bulkhead-door, and the gearing interme- 24, along this wire to the field-magnets 25 diate between the motor and the door; Fig. of an electric motor 26, thence through a 4, a front elevation of the bulkhead-door and wire 27 to point 49, thence through Wire 52 to part of the bulkhead; Fig. 5, aside elevation contact point 15, thence to blade 12, and 85 3 5 of the same, showing the guides in which the thence through wire 22 to main negative wire door travels; Fig. 6, a section of Fig. 5 on I), thus energizing the field-magnets 25 and line A B; Fig. 7, a longitudinal sectional elecompleting the circuit. At the same time vation through one of the solenoids for makcurrent passes from-line 21 to contact-point ing the first contact between the contact- 17, to blade 11, along'this blade to point 14, o point 011 the door and the contact-points on thence along a wire 28 to a solenoid 29, thence the rheostat; Fig. 8, a view of a crank which along a wire 30 to point 15, thence along blade can be used to rotate the armature-shaft by 12 to Wire 22, and thence to main negative wire hand in order to operate any particular door I), thus completing the circuit. The solenoid independently of the electrical devices. 29 having been charged its col-e31 is'moved 95 a b are main supply-wires which receive out, making contact with both contact-point current from anysuitable source of electrical 32, carried by door 33, and with the lowest consupply. tact-point of the rheostat 34. 35 is a wire con- 3 4 are solenoid-magnets, the former of necting rheostat 34 and negative line-wire b; which is connected with a wire 5 and the lat- 36, a wire connecting armature 37 and positive mo ter with a wire 6. line-wire a; 38, a wire connecting armature 7 is a Wire connecting the coils of the wires 37 and a point 39, and 40 a flexible wire conof rheostat, current passes from line-wire a to wire 36, to armature 37, to wire 38, to point 39, to wire 40, to point 32, through core 31 of solenoid 29 to rheostat 34, and thence through wire 35 to negative line-wire b, thus completing the circuit and causing the armature 37 to commence to revolve slowly. 54, Fig. 7, is a spring which returns the core of the solenoids to their retracted position when the switch has been operated to cut the current off from them. Upon shaft 41 of the armature is a worm 42, which gears with a wormwheel 43, upon the shaft of which is a pinion 44, gearing into an intermediate pinion 45, which gears with and drives a rack 46, which is carried by door 33. This mechanism is shown in Figs. 1 and 3. The revolution of the armature through the gearing described lifts the door 33, and as the contact-point 32, carried by the door, gets nearer and nearer the middle of the rheostat, the wire 35 being connected'to the middle of this instrument, more and more current is supplied to the armature and its revolution becomes faster and faster. After passing the middle of the rheostat the resistance becomes greater and greater and the speed of the armature is proportionately lessened, so that when contactpoint 32 leaves the upper contact-point on the rheostat and the dooris fully opened the movement of the motor and door have ceased.

When it is desired to close the door, the button 0 is pressed, causing the solenoid 4 to retract its core and the blades 11, 12, and 13 to make contact with points 47, 48, and 49. This reverses the currents in the field-magnet wires 24 and 27 and the direction of motion of the armature 37. At the same time current passes from blade 11 to wire 50, to solenoid 51, which is a counterpart of solenoid 29, to wire 60, to wire 24, to blade 12, to wire 22, and to wire I), thus completing the circuit and starting the'door downward in the same manner as has already been described for its upward movement.

The door 33 is wedge shapedtl 1at is, thicker at the top than at the bottomand runs in wedge-shaped grooves 54 in guides 55, Figs. 4, 5, and 6, carried by the bulkhead 56. This construction insures a tight fit of the door when closed.

57, Fig. 8, is a crank which may be placed on the squared end 58 of the armature-shaft in order to revolve this shaft and operate the door 33 by hand.

Having thus described our invention, we claim as new and desire to secure by Letters Patent 1. In a controlling device for an electric motor, in combination, said motor, a rheostat furnished with a line of contact-points and connected at or near its center with one of the main line-wires, a movable contact-point, actuated by said motor, adapted to make contact successively with the contact-points of said rheostat, an electric connection between said movable contact, the armature of said motor, and the second main line-wire, and means for energizing the field-magnets of said motor.

2. In a controlling device for an electric motor, in combination, said motor, a rheostat furnished with a line of contact-point5 and connected at or near its center with the first of the main line-wires, a movable contactpoint actuated by said motor adapted to make contact successively with the contact-points of said rheostat, an electrical connection between said movable contact, the armature of the motor, and the second main line-wire,

means for energizing the field-magnets of the motor, a solenoid-magnet adapted to make contact between the movable contact-point and the first contact-point of said rheostat,and means for energizing said solenoid-magnet.

3. The combination with an electric motor, a regulator as described for automatically controlling the current supplied to the motor, and a switch for reversing the current to said motor, of a worm of the motor-shaft, a wormwheel gearing into and driven by said worm, a sliding door, a rack upon said door, gearing intermediate of said worm-wheel and said rack by means of which said door may be operated,a contact carried by said door adapted to make connection with the contact-points of said regulator, a solenoid-magnet for making contact between the movable contact point and the first contact-point on the regulator, and means for simultaneously energizing the field-magnets of the motor and said contact-making solenoid.

ALBERT H. THOMAS. FRANKLIN B. RICHMOND. \Vitnesses:

WM. H. LEWIS, CHARLES GRUBER.

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